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between tanks must be equal to twice the width of a single <br /> deadman.One deadman may be used between two tanks if it is <br /> CAUTION:Xerxes recommends that every site be thoroughly doubled in width. Provide a separate anchor point for each <br /> evaluated for the potential to trap water or otherwise subject the holddown strap. ' <br /> tank to a rise in the local water table.Xerxes recommends that ANCHOR SLAB: <br /> all tanks be anchored in installations in which water may enter An anchor slab is a reinforced concrete base.The total length of the <br /> the hole.Failure to anchor may damage the tank or surrounding slab is 12"greater than the overall length of the tank.The minimum <br /> property. slab thickness is 8".The width of the slab depends on the tank <br /> DEADMAN ANCHOR: diameter.Refer to Table 71 for specific dimensions.Refer to Table <br /> A deadman is a reinforced concrete beam with a total length 12 7-2 and Figure 7-2 for anchor point dimensions.Provide a separate <br /> inches greater than the overall length*of the tank.A deadman may anchor point for each holddown strap.When using a concrete base <br /> be fabricated in multiple sections as long as the total length is not slab,allow sufficient depth in the excavation for 12"of bedding <br /> decreased and each section contains at least two anchor points. material below the tank. <br /> The width and thickness depend on the tank diameter.Refer to TABLE 7-2 <br /> Table 71 for specific dimensions. <br /> TANK DIA. DIM"A" DIM"B" DIM"C" DIM"E" DIM"D" <br /> TABLE 71 MIN.MAX. <br /> TANK DIA. DEADMAN DIMENSIONS SLAB WIDTH 4' 24" 18" 12" 27" 30" 8'-41/4" <br /> (FT.) (W x D)(IN.) (FT.) <br /> 6' 35" 23" 13" 42" 48" 12'-1 <br /> 4 6"x 6" 5' <br /> " <br /> 6 12"x 12" 8' 8' 43" 31" 15" 52" 58" 15'-1" <br /> 8 12"x 12" 10' 10' 5T' 45" 15" 69" 75" 18'-83/4" <br /> 10 18"x 12" 12' 12' 58" 50" 23" 87" 93" 22'-63/d' <br /> 12 36"x 8" 14' _ <br /> POSITION STRAP CLIP <br /> II — AT TANK TOP <br /> IIIII -Q- i I <br /> I = IIII <br /> = II o I I <br /> III— <br /> r.: — =11111 <br /> C III <br /> .d: TYPICAL ANCHORING - II <br /> .o:" IIIII II CONFIGURATION <br /> •��.. . III = I I I <br /> •SLAB , <br /> —IIIII— •. OEAONAN •••_IIII III <br /> III =III— <br /> TANK SHADOW — III—I111—I I I IIII=I III—1 1 IIII <br /> FIGURE 7-2 <br /> I I � <br /> 2 X WIDTH <br /> WIDTH (SEE TABLE 7-1) II <br /> FIGURE 71 <br /> -' <br /> Lay the deadmen in the excavation parallel to the tank and outside ` <br /> of the tank"shadow"(see Figure 71).In multiple tank installations, <br /> each tank will require two deadmen.The minimum spacing <br />